i don't really know the song, but i had a quick search and look/listen.
here is a live version with a few shots of the guitarist:
http://www.youtube.com/watch?v=ocjYOIgrCZI
i also saw this 'lesson'. i can't recommend it so heartily, as some of the technique, such as holding the guitar and pick seem a little less then perfect, but the chords and strumming pattern are there.
http://www.5min.com/Video/Learn-to-P...uitar-61111918
here's another version, easy to watch the strumming.
http://www.youtube.com/watch?v=GglrDLylXJg
there seemed to many more covers, watch as many as you can.